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English: Iceland moss.

French: mousse d'Islande.

From the family of Cetrariáceas.

Wake up your appetite. It is useful in whooping cough, colds, bronchitis, chronic diarrhea, poor digestion, anemia. To stimulate lactation.

Used Part.

The thallus of Cetraria islandica (L. Acharius or the Cetraria ericetorum Opiz (= C. Tenuiflora (Retz. Howe)

Active Principles.

Water - soluble polysaccharide (50%) liquenina, isoliquenina. Mucilages, polymers of D - glucose and D - glucuronic acid, Galactomannan. Lichen acids (bitter principles) Cetraro, fumaroprotocetrárico, protoliquéstrico, úsnico.

Drug Action.

The lichen acids act as a tonic bitter aperitif, digestive, colagogo, antiemetic, besides exerting a bacteriostatic and antifungal. The lichen Iceland is commonly used as a corrective organoleptic drug - flavored nauseating. The mucilages have a demulcent, antitusiva, mucolytic and diuretic. Polysaccharides produce a immunostimulant.


Flu, colds, laryngitis, pharyngitis, bronchitis. Anorexia, gastroenteritis dispepsias hiposecretoras, dyskinesias liver and gall bladder, gastric ulcers. Hyperemesis gravidarum. Popularly has also been used as galactagogo. Externally: abscesses, boils, wounds, burns, skin ulcerations, ichthyosis, psoriasis.


Gastritis, gastroduodenal ulcus (see precautions)

Do not prescribe dosage forms with alcoholic content for oral administration in children under two years or consultants in the process of alcohol addiction.

Caution / Poisoning.

The abundance in depsidonas bitter ago that the drug is contraindicated if there gastritis or gastric ulcers. Therefore, except when you want the action of the bitter principles (appetizer - eupéptico, colagogo) it is advisable to administer dosage forms desamargadas (double decoction, gelatin) but we must take into consideration that the denial of the principles involves bitter the disappearance of the bacteriostatic effect.

Take into account the alcohol content of the fluid extract and tincture.

Galenica forms / Dosage.

Infusion: 10 - 20 g / liter, a cup before meals as an aperitif.

Double decoction: 10 g boil for one minute in 1 liter, remove the water, to be dragged and bitter substances are the mucilages. Wash the lichen and return to boil with 1. 5 liter of water for 30 minutes. Three cups a day, as pectoral, or in cases of gastroenteritis.

Fluid extract (1: 1) 10 - 25 drops, two or three times a day.

Tincture (1: 10) 50 drops a day, as antiemetic.

Gelatin: 5 to 100 grams a day or applied topically.

Syrup (5% extract fluid) one to five tablespoons a day.


Bézanger - Beauquesne, L; Pinkas, M; Torck, M. Dans la Plantes Les Thérapeutiques Moderne. 2. Paris: Maloine, 1986, pp. 129 - 30.

Bézanger - Beauquesne, L; Pinkas, M; Torck, M; Trotin, F. Medicinal plants of temperate Regions. Paris: Maloine, 1980, p. 18.

Bruneton, J. Elements of Phytochemistry and Pharmacognosy. Zaragoza: Acribia, 1991, p. 220.

European Scientific Cooperative on Phytotherapy. Monographs on the medicinal uses of plant drugs. Fascicle III: Lichen islandicus. July, 1997.

Fernandez, M; Nieto, A. Medicinal Plants. Pamplona: Ediciones Universidad de Navarra, 1982, p. 57.

Paris, RR; Moyse, M. Summary of Matter Médicale. Take I. Paris: Masson, 1986, p. 365.

Peris, JB; Stübing, G; Vanaclocha, B. Applied Fitoterapia. Valencia: M. I. Official College of Pharmacists, 1995, p. 349.

Trease, GE, Evans, WCh. Pharmacognosy. Mexico City: Inter - MacGraw - Hill, 1991, p. 729.

WICHTL, M. Herbal Drugs and Phytopharmaceutical. A Handbook for Practice on a scientific basis. Stuttgart: Medpharm Scientific Publishers, 1994, pp. 137 - 9.

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